1)From Hotel Panda to Ngong Ping 360
Panda Hotel is close to MTR station Tai Wo Hau. Take Metro from Tai Wo Hau to Tung Chung. Get off the station and walk about 2 minutes, you will reach the cable car Ngong Ping 360. The journey time is about 30 minutes and the fare is around HK$12.
2)It is a bit tight to arrange these things in two days. But Here is my suggestion. Spend one day on Ocean Park, Victoria Peak and Symphony of Lights. Spend another day on Disneyland and Ngong Ping 360. Actually, Disneyland is enough for you to visit a whole day. Since you have kids, i suggest you give Ngong Ping 360 a miss and spend as much as you can in Disneyland. Just my point of view, hope it helps.